Natrium-doped Cesium Iodine [CsI(Na)] Crystals
● High output γ -ray stopping power
● High density and atomic number
● Suitable for harsh environmental applications
Sodium doped Cesium Iodide or CsI(Na) CsI(Na) has a wavelength of emission peak at 420nm and is well matched to the photocathode sensitivity of bialkali photomultiplier and has a light output yielding to 85% of NaI(Tl).  Compared to NaI(Tl), it is a relatively soft and plastic material without cleavage plan which makes the material interesting where severe environmental conditions are encountered.